linked list add

Author: amejiarosario

check-permutation.js renamed to ch1/check-permutation.js

@@ -0,0 +1,27 @@
+class Node {
+  constructor(data) {
+    this.data = data;
+  }
+
+  add(data){
+    let end = new Node(data);
+
+    // iterate
+    let n = this;
+    while(n.next) {
+      n = n.next;
+    }
+
+    n.next = end;
+  }
+
+
+}
+
+// usage:
+
+let node  = new Node('1');
+node.add('2');
+node.add('3');
+
+console.log(node);